Hi,

well, I've checked better this phenomena, and I found out that there's a repeating issue. This is a standard NOTICE message:

To save privacy, I put KNOWN_USER@CORRECT_DOMAIN as a valid email address, and UNKNOWN_USER@CORRECT_DOMAIN as a non-existent email address, even if the domain is correct and is equal in both addresses.

I hope that this can help finding a good solution, I'm really getting annoyed about them :(

P.S.: I use MySQL for mail delivery instructions.

Thx a lot in advance, Tony.

Subject: NOTICE: mail delivery status.

This is a delivery status notification from smartsoft-svr, running the Courier mail server, version 0.54.2.

The original message was received on Thu, 22 Feb 2007 07:05:41 +0100 from localhost (localhost [127.0.0.1])

---------------------------------------------------------------------------

UNDELIVERABLE MAIL

Your message to the following recipients cannot be delivered:

<UNKNOWN_USER@CORRECT_DOMAIN>: <<< 550 User unknown.

---------------------------------------------------------------------------

If your message was also sent to additional recipients, their delivery status is not included in this report. You may or may not receive other delivery status notifications for additional recipients.

The original message follows as a separate attachment.

This is a delivery status notification from smartsoft-svr, running the Courier mail server, version 0.54.2.

The original message was received on Thu, 22 Feb 2007 07:05:41 +0100 from 79.141.108.125.broad.wz.zj.dynamic.163data.com.cn ([::ffff:125.108.141.79])

---------------------------------------------------------------------------

UNDELIVERABLE MAIL

Your message to the following recipients cannot be delivered:

<KNOWN_USER@CORRECT_DOMAIN>: <<< Mail loop - already have my Delivered-To: header.

---------------------------------------------------------------------------

If your message was also sent to additional recipients, their delivery status is not included in this report. You may or may not receive other delivery status notifications for additional recipients.

The original message follows as a separate attachment.

Reporting-Mta: dns; smartsoft-svr Arrival-Date: Thu, 22 Feb 2007 07:05:41 +0100 Received-From-Mta: dns; 79.141.108.125.broad.wz.zj.dynamic.163data.com.cn ([::ffff:125.108.141.79]) Final-Recipient: rfc822; KNOWN_USER@CORRECT_DOMAIN Action: failed Status: 5.0.0 Diagnostic-Code: unknown; Mail loop - already have my Delivered-To: header. From: "Angelique" <UNKNOWN_USER@CORRECT_DOMAIN> To: "Alisha" <KNOWN_USER@CORRECT_DOMAIN> Date: 22 Feb 2007, 07:05:37 AM Subject: Intraday Unusual Volume - Top 5 Up